Jaundice

Jaundice is a yellow color of the skin, mucus membranes, or eyes. The yellow coloring comes from bilirubin, a byproduct of old red blood cells. Jaundice can be a symptom of other health problems.

Jaundice is a condition produced when excess amounts of bilirubin circulating in the blood stream dissolve in the subcutaneous fat (the layer of fat just beneath the skin), causing a yellowish appearance of the skin and the whites of the eyes. With the exception of normal newborn jaundice in the first week of life, all other jaundice indicates overload or damage to the liver, or inability to move bilirubin from the liver through the biliary tract to the gut.

Newborn jaundice (producing yellow skin) can have many causes, but the majority of these infants have a condition called physiological jaundice, a natural occurrence in the newborn due to the immature liver. This type of jaundice is short term, generally lasting only a few days. Jaundice should be evaluated by a physician until decreasing or normal levels of bilirubin are measured in the blood.

Using bili lights is a therapeutic procedure performed on newborn or premature infants to reduce elevated levels of bilirubin. If blood levels of bilirubin become too high, the bilirubin begins to dissolve in the body tissues, producing the characteristic yellow eyes and skin of jaundice. Bilirubin also has an affinity for brain tissue, where it can accumulate and cause permanent brain damage.

Causes

A small number of red blood cells in your body die each day, and are replaced by new ones. The liver removes the old blood cells. This creates bilirubin. The liver helps break down bilirubin so that it can be removed by the body through the stool.

Jaundice can occur when too much bilirubin builds up in the body.

Jaundice can occur if:

Too many red blood cells are dying or breaking down and going to the liver

The liver is overloaded or damaged

The bilirubin from the liver is unable to properly move into the digestive tract

Jaundice is often a sign of a problem with the liver, gallbladder, or pancreas. Things that can cause jaundice include:

Infections

Use of certain drugs

Cancer

Blood disorders, gallstones, birth defects and a number of other medical conditions can lead to jaundice. For more information on the causes of jaundice see: Jaundice causes